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EP2036365B1 - Mode écoute pour terminaux radio - Google Patents

Mode écoute pour terminaux radio Download PDF

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Publication number
EP2036365B1
EP2036365B1 EP07795322.2A EP07795322A EP2036365B1 EP 2036365 B1 EP2036365 B1 EP 2036365B1 EP 07795322 A EP07795322 A EP 07795322A EP 2036365 B1 EP2036365 B1 EP 2036365B1
Authority
EP
European Patent Office
Prior art keywords
network
cell
wireless
mode
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07795322.2A
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German (de)
English (en)
Other versions
EP2036365A4 (fr
EP2036365A2 (fr
Inventor
Jahangir Mohammed
Daniel G. Collins
Amit Gupta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jasper Technologies LLC
Original Assignee
Jasper Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP2036365A2 publication Critical patent/EP2036365A2/fr
Publication of EP2036365A4 publication Critical patent/EP2036365A4/fr
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Publication of EP2036365B1 publication Critical patent/EP2036365B1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Wireless devices today operate in one of three radio modes - TRAFFIC, STANDBY or OFF.
  • the device In both TRAFFIC and STANDBY modes, the device periodically sends control information to and receives control information from other wireless transmitters (usually fixed towers and/or other wireless devices) independent of any user data transmission.
  • the OFF mode the device is separated from the network, and it does not send or receive any information (whether for control or for data purposes).
  • Devices change to the OFF mode for multiple reasons - two typical reasons being to conserve power and to avoid sending RF signals in restricted environments like hospitals and airplanes. However, it takes considerable time to reconnect with the network and communicate data messages when the device switches from the OFF mode to the TRAFFIC mode.
  • the device When the device remains powered on and not in TRAFFIC mode, it stays in STANDBY mode. In STANDBY mode, the device camps on a control channel, decodes system information and periodically transmits signals to the network announcing its whereabouts. However, transmitting periodic signals drains device power and uses resources of the network. It would be beneficial to conserve network resources and conserve power for the device without having the lengthy reconnect time from the OFF mode.
  • WO02/09464 describes a method for improved cell selection for multi-mode radio stations in the idle state by allocating priorities to network information of stations and networks on the basis of the signal strength of their signals.
  • a method for listening on a cell of a wireless network the method in accordance with claim 1.
  • a wireless communication device in accordance with claim 13.
  • a further aspect of the invention provides a computer program product as defined in claim 14.
  • the invention can be implemented in numerous ways, including as a process, an apparatus, a system, a composition of matter, a computer readable medium such as a computer readable storage medium or a computer network wherein program instructions are sent over optical or communication links.
  • these implementations, or any other form that the invention may take, may be referred to as techniques.
  • a component such as a processor or a memory described as being configured to perform a task includes both a general component that is temporarily configured to perform the task at a given time or a specific component that is manufactured to perform the task.
  • the order of the steps of disclosed processes may be altered within the scope of the invention.
  • a LISTEN mode comprises camping on a cell of a wireless network until a registration condition is satisfied.
  • One or more available cells are determined for a wireless device.
  • One or more available networks are determined based at least in part on the one or more available cells.
  • a network is selected based at least in part on one or more network selection criteria.
  • a cell is selected of the selected network. The selected cell is camped on wherein camping enables receiving control channel information from the selected cell of the selected network.
  • the wireless device is registered on the selected network using control channel information.
  • the device listens for the wireless signals from the various transmitters, but does not transmit any signals out. In this state, the device remains camped on a control channel decoding system information and can keep track of the "Control channel(s)" in the surrounding radio environment.
  • the device can switch to TRAFFIC or STANDBY state a lot faster - resulting in much better customer experience; 2) the device can use some of the surrounding radio environment information to decide to switch to STANDBY mode and transmit data/ receive information; 3) the device can switch to STANDBY or TRAFFIC mode a lot faster, when the user initiates an activity; 4) the device can store the information about the surrounding radio environment for other applications (for example, to report on the signal strength at various locations); 5) the device conserves power because transmitting signals as is done in STANDBY mode requires a lot more power as compared to just receiving signals as is done in LISTEN mode; 6) the device does not register or do location updates with the network- saving network resources, and hence cost, on its signaling channels in both wireless and wired infrastructure; 7) the device is "anonymous" - others do not know about its existence and it does not need to authenticate itself in the LISTEN mode.
  • the registration condition comprises having data to send, having not registered for a predetermined period of time (e.g., 2 days), a user indication to register, one or more user actions, or any other appropriate registration condition.
  • a previous network selection is used to help determine the current network selected.
  • the wireless network comprises a cell phone network, a WiFiTM network, a WiMaxTM network, a CDMA network, a GSM network, a GPRS network, a TDMA network, or any other appropriate wireless network.
  • LISTEN mode keeps track of the Control Channel and enumerates all information elements - including signal strength (e.g., signal strength from one or more available cells), nearby cells, neighboring cell identifiers, network identifiers, location area identifiers, cell identifiers, location information, etc.
  • signal strength e.g., signal strength from one or more available cells
  • nearby cells e.g., neighboring cell identifiers, network identifiers, location area identifiers, cell identifiers, location information, etc.
  • control channel information from the camped on cell is stored and the stored information includes signal strength from one or more of the available cells and location information.
  • location information is derived from GPS derived location information.
  • Control Channel information elements are used to trigger other events on device or to perform predetermined operations on the device, including communicating with the wireless network and/or third-party devices and servers - for example, the time is after a predetermined time (i.e., a rental car should be returned on a certain day; the device is triggered to send a message on that day indicating the location of the car) or the wireless device is located in a predetermined prohibited geographic area (i.e., a rental car should only be driven in the USA and not Mexico; the device is triggered to send a message when it enters Mexico as identified by a Mexican cell tower).
  • a predetermined time i.e., a rental car should be returned on a certain day; the device is triggered to send a message on that day indicating the location of the car
  • a predetermined prohibited geographic area i.e., a rental car should only be driven in the USA and not Mexico; the device is triggered to send a message when it enters Mexico as identified by a Mexican cell tower.
  • Control Channel information elements are stored for signal-strength reporting/location-tracking and other purposes (e.g., a rental car should only be driven in the USA not Mexico, the device stores cell tower identification information so that on return of the car the rental agency can determine if the car was driven near a Mexican cell and hence beyond the parameters of the rental contract).
  • mapping between "radio world” and GPS information is stored, if available, and this mapping is used for getting approximate GPS information for other devices when they do not get GPS signals.
  • a cellular device that is simply in a STANDBY mode all the time without user doing any voice or data transactions still represent cost for the carrier. This is because in the standby mode the device still sends occasional signaling messages to the base station, which costs money. In the LISTEN mode, however, the device does not send any signaling messages to the base station, yet it is able to conduct a transaction for the user without too much latency when asked to do so. This is achieved by the device passively listening so that it is aware of the closest base station and the system information, but not transmitting any messages.
  • camping is for an extended period of time where the network is not aware of the device, but the device is all but registered on the selected network.
  • control channel information is stored and refreshed in preparation for registering on a selected network.
  • One or more available cells are determined for a wireless device.
  • One or more available networks are determined based at least in part on the one or more available cells.
  • a network is selected based at least in part on one or more network selection criteria.
  • a cell is selected of the selected network. The selected cell is camped on wherein camping enables receiving control channel information from the selected cell of the selected network. Control channel information is stored. Stored control channel information is refreshed from the selected cell of the selected network.
  • camping is for an extended period of time where the network is not aware of the device, but the device is all but registered on the selected network.
  • the device can move to a neighboring cell of a selected network and continue to camp.
  • Control channel information is stored and refreshed in preparation for registering on a selected network.
  • One or more available cells are determined for a wireless device.
  • One or more available networks are determined based at least in part on the one or more available cells.
  • a network is selected based at least in part on one or more network selection criteria.
  • a cell is selected of the selected network. The selected cell is camped on wherein camping enables receiving control channel information from the selected cell of the selected network.
  • Control channel information is stored.
  • a neighboring cell of the selected cell of the selected network is selected. The neighboring cell is camped on, wherein camping enables receiving control channel information.
  • FIG. 1 illustrates a block diagram of an embodiment of a system for camping on a cell of a wireless network in a LISTEN mode.
  • device 100 comprises a mobile device that communicates data.
  • Device 100 includes a mobile data service (MDS) 102 - for example, general packet radio service - and an identifier (ID) 104 - for example, a subscriber identifier module.
  • MDS mobile data service
  • ID identifier
  • Data can be transmitted and received by device 100 using MDS 102.
  • Device 100 is identified using ID 104 and associated with a user or customer. Transmissions and receptions of data communicate with carrier network 112, which is associated with MDS 102.
  • the carrier network associated with MDS 102 comprises a mobile carrier network, a cell phone network, a messaging network, wireless communication network, a WiFiTM network, a WiMaxTM network, a CDMA network, a GSM network, a GPRS network, a TDMA network, or any other appropriate network for communicating data to a mobile device.
  • a plurality of carrier networks represented in Figure 1 by carrier network 112 and 120, each include a plurality of cell towers - represented in Figure 1 by tower 106 and 126. Communications of data traffic to and from device 100 are received by carrier network 112 via a cell tower or by carrier network 120 via a cell tower, which can communicate the data traffic with network 114 and a customer application system 116.
  • device 100 moves into range of one or more of the plurality of carrier networks/plurality of cell towers and remains in LISTEN mode until a registration condition has been satisfied.
  • LISTEN mode enables device 100 to conserve its own power and not tax carrier network resources until they are required for a communication.
  • network 114 comprises the internet, a local area network, a wide area network, a wired network, a wireless network, or any other appropriate network for communicating with customer system 116.
  • Customer application system 116 receives data from and transmits data to device 100 regarding the customer's services or products.
  • the customer's services includes transaction related services, monitoring services, and/or location tracking services.
  • Figure 2 is a flow diagram illustrating an embodiment of a process for camping on a cell of a wireless network in a LISTEN mode.
  • the process of Figure 2 is executed on device 100 of Figure 1 .
  • the available cells are determined, and cell information is recorded, if desired.
  • the cell information learned while determining available cells is recorded; the information determined includes local networks available, local signal strengths, local tower identifiers, etc.
  • RF channels are searched to locate any cells that are broadcasting signals. If a signal is located, then the control channel information from the signal is added to an available cell list.
  • the available networks are determined based on the available cells.
  • the control channel information associated with the available cell can be used to determine the associated network of the cell.
  • a network is selected based on selection criteria. In various embodiments, the selection criteria includes if the network is the prior network selected, if the network is on a predetermined list of acceptable networks, or any other appropriate selection criteria.
  • a cell of the selected network is selected.
  • the selected cell of the selected network is camped on.
  • camping on a cell includes synchronizing to the broadcast signal, decoding control channel information, monitoring quality parameters (e.g., signal levels) to ensure that minimums are met, or any other appropriate camping processes.
  • control channel information is stored, refreshed from received control channel information, updated from control channel information received from a neighboring or new cell of a network, or any other appropriate manner of tracking control information useful for registering on a wireless network.
  • registration criteria it is determined if registration criteria have been met. If the registration criteria have not been met, then control passes to 208. If the registration criteria have been met, then registration is performed in 212. In some embodiments, control channel information is used to help register. Registration enables the device to communicate with the wireless network and with servers (e.g., a customer application server) in communication with the wireless network.
  • servers e.g., a customer application server
  • camping occurs for an extended period of time so that control channel information used during registration is updated based on control channel information received from camping.
  • control channel information is received from the same cell, form a neighboring cell, or from a new cell.
  • no registration occurs after having selected a cell, after having selected a network, after having begun to camp on a cell, after selecting a different cell from an originally selected cell, or after selecting a different network from an originally selected network.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Claims (15)

  1. Méthode d'écoute d'une cellule d'un réseau sans fil (112, 120), la méthode comprenant :
    - la détermination (200) de la disponibilité d'une ou plusieurs cellules pour un dispositif sans fil (100);
    - la détermination (202) de la disponibilité d'un ou plusieurs réseaux basée au moins pour partie sur la disponibilité d'une ou plusieurs cellules ;
    - le choix d'un réseau basé au moins pour partie sur un ou plusieurs critères de sélection de réseau ;
    - la sélection (206) d'une cellule dans le réseau choisi ;
    - l'opération du dispositif sans fil en mode écoute dans lequel le dispositif sans fil (100) campe (208) sur un canal de contrôle de la cellule sélectionnée pour recevoir de l'information du canal de contrôle en provenance de la cellule du réseau choisi, le mode écoute demeurant en opération jusqu'à ce qu'une condition d'enregistrement (211, 212) soit satisfaite, auquel moment le dispositif sans fil change du mode écoute en un mode choisi parmi l'un d'un mode veille ou d'un mode à trafic actif, dans laquelle l'opération du dispositif sans fil en mode veille et en mode à trafic actif provoque l'envoi de messages de signal, alors que l'opération du dispositif sans fil en mode écoute conserve l'alimentation en faisant en sorte que le dispositif sans fil ne tente pas de s'enregistrer auprès du réseau choisi et en faisant en sorte que le dispositif sans fil ne transmette de messages de signal, le dispositif sans fil (100) en mode écoute étant ainsi anonyme face au réseau choisi ; et
    - dans le cas où la condition (211) d'enregistrement est satisfaite, l'enregistrement (212) du dispositif sans fil (100) auprès du réseau choisi en utilisant l'information du canal de contrôle.
  2. Méthode selon la revendication 1, comprenant en outre :
    - en mode écoute, le décodage d'information système du fait du campement sur le canal de contrôle et la surveillance de canaux de contrôle multiples dans un environnement radio environnant.
  3. Méthode selon la revendication 1 ou la revendication 2, dans laquelle l'opération en mode écoute permet au dispositif sans fil d'effectuer une transaction pour l'utilisateur.
  4. Méthode selon la revendication 1, 2 ou 3, dans laquelle la condition d'enregistrement comprend le fait d'être obligé d'envoyer des données depuis le dispositif sans fil, ou comprend le fait de ne pas s'être enregistrer depuis un certain laps de temps prédéterminé, ou comprend une ou plusieurs actions de l'utilisateur.
  5. Méthode selon l'une quelconque des revendications précédentes, dans laquelle le réseau sans fil comprend un réseau de téléphonie, ou comprend un réseau WiFi, ou comprend un réseau WiMax, ou comprend un réseau CDMA, ou comprend un réseau GSM, ou comprend un réseau GPRS, ou comprend un réseau TDMA.
  6. Méthode selon la revendication 1, comprenant en outre le stockage d'information déterminée à partir de cellules disponibles pour le dispositif sans fil.
  7. Méthode selon la revendication 6, dans laquelle l'information stockée comprend la force du signal en provenance des cellules disponibles, ou à partir d'une ou plusieurs cellules disponibles et des informations de localisation.
  8. Méthode selon la revendication 7, dans laquelle l'information de localisation est dérivée à partir d'informations GPS.
  9. Méthode selon la revendication 6, dans laquelle l'information stockée est utilisée pour fournir une information de localisation approximative pour d'autres dispositifs.
  10. Méthode selon la revendication 6, dans laquelle l'information stockée comprend des identifiants de cellules ou comprend des identifiants de cellules voisines, ou comprend des identifiants de réseaux, ou comprend des identifiants de localisation.
  11. Méthode selon la revendication 1, comprenant en outre, dans le cas où l'information déterminée à partir des cellules disponibles pour le dispositif sans fil remplit un ou plusieurs critères déclencheurs, l'exécution d'une opération prédéterminée.
  12. Méthode selon la revendication 1, dans laquelle les critères déclencheurs comprennent le fait que les informations déterminées à partir des cellules disponibles sont indicatifs de ce que le dispositif sans fil se trouve dans un endroit géographique prohibé prédéterminé, ou sont indicatifs de ce que le laps de temps est supérieur à un laps de temps prédéterminé.
  13. Dispositif de communication sans fil pour écouter une cellule d'un réseau sans fil, le dispositif sans fil comprenant :
    - un processeur ; et
    - une mémoire couplée au processeur, dans lequel la mémoire est configurée pour fournir au processeur des instructions qui, lorsqu'elles sont exécutées, font en sorte que le processeur :
    - détermine la disponibilité d'une ou plusieurs cellules pour un dispositif sans fil ;
    - détermine la disponibilité d'un ou plusieurs réseaux basé au moins pour partie sur la disponibilité d'une ou plusieurs cellules ;
    - choisit un réseau basé au moins pour partie sur un ou plusieurs critères de sélection de réseau ;
    - sélectionne une cellule dans le réseau choisi ;
    - opère en mode écoute dans lequel le dispositif sans fil campe sur un canal de contrôle de la cellule sélectionnée pour recevoir de l'information du canal de contrôle en provenance de la cellule du réseau choisi, le mode écoute demeurant en opération jusqu'à ce qu'une condition d'enregistrement soit satisfaite, auquel moment le dispositif sans fil change du mode écoute en un mode choisi parmi l'un d'un mode veille ou d'un mode à trafic actif, dans laquelle l'opération du dispositif sans fil (100) en mode veille et en mode à trafic actif provoque l'envoi de messages de signal, alors que l'opération du dispositif sans fil en mode écoute conserve l'alimentation en faisant en sorte que le dispositif sans fil ne tente pas de s'enregistrer auprès du réseau choisi et en faisant en sorte que le dispositif sans fil ne transmette de messages de signal, et en ne transmettant aucun message de signal, le dispositif sans fil en mode écoute reste ainsi anonyme face au réseau choisi ; et
    - dans le cas où la condition d'enregistrement est satisfaite, enregistre le dispositif sans fil auprès du réseau choisi en utilisant l'information du canal de contrôle.
  14. Produit logiciel pour ordinateur pour camper sur une cellule d'un réseau sans fil, le produit logiciel pour ordinateur comprenant des instructions qui, lorsqu'elles sont exécutées par une machine, font en sorte que la machine effectue la méthode selon l'une quelconque des revendications 1 à 12.
  15. Dispositif de communication sans fil selon la revendication 13, dans lequel la condition d'enregistrement comprend le fait d'être obliger d'envoyer des données depuis le dispositif de communication sans fil, ou comprend le fait de ne pas s'être enregistré depuis un laps de temps prédéterminé, ou comprend une ou plusieurs actions de l'utilisateur.
EP07795322.2A 2006-06-20 2007-05-24 Mode écoute pour terminaux radio Active EP2036365B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US81496606P 2006-06-20 2006-06-20
US11/506,398 US7769381B2 (en) 2006-06-20 2006-08-17 Listen mode for wireless devices
PCT/US2007/012446 WO2007149179A2 (fr) 2006-06-20 2007-05-24 Mode écoute pour terminaux radio

Publications (3)

Publication Number Publication Date
EP2036365A2 EP2036365A2 (fr) 2009-03-18
EP2036365A4 EP2036365A4 (fr) 2012-08-15
EP2036365B1 true EP2036365B1 (fr) 2015-08-19

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EP07795322.2A Active EP2036365B1 (fr) 2006-06-20 2007-05-24 Mode écoute pour terminaux radio

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US (2) US7769381B2 (fr)
EP (1) EP2036365B1 (fr)
ES (1) ES2546752T3 (fr)
WO (1) WO2007149179A2 (fr)

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US7483702B2 (en) * 2004-10-20 2009-01-27 Nokia Corporation Cell reselection for improving network interconnection
US20060194577A1 (en) * 2005-02-25 2006-08-31 Yu-Li Su Carrier search methods and related devices
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US7769381B2 (en) * 2006-06-20 2010-08-03 Jasper Wireless, Inc. Listen mode for wireless devices

Also Published As

Publication number Publication date
EP2036365A4 (fr) 2012-08-15
US20100255842A1 (en) 2010-10-07
WO2007149179A2 (fr) 2007-12-27
EP2036365A2 (fr) 2009-03-18
US8010106B2 (en) 2011-08-30
US20070293217A1 (en) 2007-12-20
US7769381B2 (en) 2010-08-03
WO2007149179A3 (fr) 2008-11-06
ES2546752T3 (es) 2015-09-28

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